สอบถามเรื่องการ ดึงข้อมูลมาแสดงแบบ random ตำแหน่งครับ แล้วเปลี่ยนหน้าครับ

        #region Private Properties
        private int CurrentPage
        {
            get
            {
                object objPage = ViewState["_CurrentPage"];
                int _CurrentPage = 0;
                if (objPage == null)
                {
                    _CurrentPage = 0;
                }
                else
                {
                    _CurrentPage = (int)objPage;
                }
                return _CurrentPage;
            }
            set { ViewState["_CurrentPage"] = value; }
        }
        private int fistIndex
        {
            get
            {

                int _FirstIndex = 0;
                if (ViewState["_FirstIndex"] == null)
                {
                    _FirstIndex = 0;
                }
                else
                {
                    _FirstIndex = Convert.ToInt32(ViewState["_FirstIndex"]);
                }
                return _FirstIndex;
            }
            set { ViewState["_FirstIndex"] = value; }
        }
        private int lastIndex
        {
            get
            {

                int _LastIndex = 0;
                if (ViewState["_LastIndex"] == null)
                {
                    _LastIndex = 0;
                }
                else
                {
                    _LastIndex = Convert.ToInt32(ViewState["_LastIndex"]);
                }
                return _LastIndex;
            }
            set { ViewState["_LastIndex"] = value; }
        }
        #endregion
        #region PagedDataSource
        PagedDataSource _PageDataSource = new PagedDataSource();
        #endregion
        #region Private Methods
        /// <summary>
        /// Build DataTable to bind Main Items List
        /// </summary>
        /// <returns>DataTable</returns>

        DataTable GetDataTable()
        {
            DataTable dtable = new DataTable();
            String strSQL;
            strSQL = "SELECT xx ORDER BY NEWID()";

            dtable = clsDB.QueryDataTable(strSQL);
            lblTotal.Text = dtable.Rows.Count.ToString() + " results";
            max = dtable.Rows.Count;
            clsDB.Close();
            return dtable;
        }

        private void BindDataList()
        {
            DataTable dataTable = this.GetDataTable();
            _PageDataSource.DataSource = dataTable.DefaultView;
            _PageDataSource.AllowPaging = true;
            _PageDataSource.PageSize = 10;
            _PageDataSource.CurrentPageIndex = CurrentPage;
            ViewState["TotalPages"] = _PageDataSource.PageCount;

            this.lblpage.Text = "Page " + (CurrentPage + 1) + " of " + _PageDataSource.PageCount;
            this.lbtnPrevious.Enabled = !_PageDataSource.IsFirstPage;
            this.lbtnNext.Enabled = !_PageDataSource.IsLastPage;
            this.lbtnFirst.Enabled = !_PageDataSource.IsFirstPage;
            this.lbtnLast.Enabled = !_PageDataSource.IsLastPage;

            this.myDataList.DataSource = _PageDataSource;
            this.myDataList.DataBind();
            this.doPaging();
        }

        /// <summary>
        /// Binding Paging List
        /// </summary>
        private void doPaging()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("PageIndex");
            dt.Columns.Add("PageText");

            fistIndex = CurrentPage - 5;


            if (CurrentPage > 5)
            {
                lastIndex = CurrentPage + 5;
            }
            else
            {
                lastIndex = 10;
            }
            if (lastIndex > Convert.ToInt32(ViewState["TotalPages"]))
            {
                lastIndex = Convert.ToInt32(ViewState["TotalPages"]);
                fistIndex = lastIndex - 10;
            }

            if (fistIndex < 0)
            {
                fistIndex = 0;
            }

            for (int i = fistIndex; i < lastIndex; i++)
            {
                DataRow dr = dt.NewRow();
                dr[0] = i;
                dr[1] = i + 1;
                dt.Rows.Add(dr);
            }

            this.dlPaging.DataSource = dt;
            this.dlPaging.DataBind();
        }
        #endregion
        protected void lbtnNext_Click(object sender, EventArgs e)
        {
            CurrentPage += 1;
            this.BindDataList();
        }
        protected void lbtnPrevious_Click(object sender, EventArgs e)
        {
            CurrentPage -= 1;
            this.BindDataList();
        }
        protected void dlPaging_ItemCommand(object source, DataListCommandEventArgs e)
        {
            if (e.CommandName.Equals("Paging"))
            {
                CurrentPage = Convert.ToInt16(e.CommandArgument.ToString());
                this.BindDataList();
            }
        }
        protected void dlPaging_ItemDataBound(object sender, DataListItemEventArgs e)
        {
            LinkButton lnkbtnPaging = (LinkButton)e.Item.FindControl("lnkbtnPaging");
            if (lnkbtnPaging.CommandArgument.ToString() == CurrentPage.ToString())
            {
                lnkbtnPaging.Enabled = false;
                lnkbtnPaging.Font.Bold = true;
                lnkbtnPaging.Font.Size = 15;
            }
        }
        protected void lbtnLast_Click(object sender, EventArgs e)
        {
            CurrentPage = (Convert.ToInt32(ViewState["TotalPages"]) - 1);
            this.BindDataList();
        }
        protected void lbtnFirst_Click(object sender, EventArgs e)
        {
            CurrentPage = 0;
            this.BindDataList();
        }